For food-contact end-use, the relevant FDA citations are 21 CFR 177.1520 (olefin polymers for food contact, which covers HDPE) and 21 CFR 178.3297 (colorants). Our wash process and replacement parts are aligned to keep reconditioned units consistent with the original FDA-compliant resin and component spec.
For prior-product traceability, we follow the spirit of the UN 31HA1 packaging code recertification framework — every food-grade unit leaves with a documented prior-contents history and a wash record sufficient for downstream packaging due-diligence.
For wash chemistry, we use food-contact-approved detergents on food-grade lines (typically NSF A1 registered) and switch detergent SKU when running industrial. The wash log captures which SKU ran on which batch. If you need MSDS / SDS for the detergent in your batch, ask — we'll attach it.
We are not a UN/DOT-recertification packaging shop. If you need a tote re-stamped with a new UN number, we'll refer you to a certified recertifier. What we do is wash, repair, and return — with documentation suitable for most food and industrial reuse cycles.